Is my boyfriend hiding something, or is it just me overreacting?

Jade 💓
So lately my boyfriend & I have been having a lot of disagreements about how he changed his profile picture on Facebook he's been acting really suspicious, and refuses me to look at his phone. What sucks is that I don't have any social media because he felt uncomfortable with the guys I had on there, so I deleted everything he thinks that since hes the man in the relationship he can do whatever he wants like have 1,000's of girls on fb. On his fb it's just a picture of him, and to me he honestly looks single he thinks that nobody thinks the way I do, but I'm a girl and if I see a hot ass guys profile and see that he doesn't have anything about a girlfriend then heck yeah I'd try talking to him( if I was single lol)   What should I do? 😩